[Event] Ask the Experts: Amending Your Taxes

No letter from IRS.

I did not check the details when I file. But, when I check the details recently, I saw an extra income from the 529 distribution which led to penalty + additional tax. Since Turbo tax did not generate a worksheet, I don't know how the problem was generated. Now, I just want to make the corrections by file an amendment. Can I get the help to do the amendment from Turbo tax? I don't know what forms should be involved and how to do it using turbo tax online. I used online version.